The PreSonus Eris E4.5 Hi-Definition 2-Way 4.5" Nearfield Monitors (Pair) are designed for recording studio tracking, mixing, and mastering. Each monitor features a 4.5" Kevlar woofer for midrange and a 1" silk dome tweeter for treble powered by a 25W class AB amplifier.

For inputs, the monitors accept balanced 1/4" TRS, unbalanced 1/8" TS, RCA and bare-wire inputs. The back panel of the monitors feature adjustment controls for fine tuning the monitors to your listening room. The controls include ±6 dB gain for the midrange and ±6 dB for the high frequency output. A selectable high-pass filter with off, 80 Hz, and 100 Hz settings lets you listen with or without the bass, and an acoustic space setting with flat, -2 dB, and -4 dB settings lets you adjust the monitors for your room's acoustic characteristics.

The cabinet uses resonance-suppressing internal bracing to optimize the sound output and the amplifiers include RF interference, output current limiting, over-temperature, transient, and subsonic protection circuits.

 

PreSonus E4.5 Specs

I/O
Inputs 2 x balanced 1/4" TRS phone
2 x unbalanced RCA
1 x stereo 1/8" TRS phone
Performance
Frequency Response 70 to 20,000 Hz
Crossover Frequency 2,800 Hz
Amplifier Power 25 W per speaker
Maximum SPL At 1 m: 100 dB
Input Impedance 10,000 Ω
User Controls
Volume Management A-type taper
Mid Frequency Driver Control: variable (-6 to 6 dB)
High Frequency Driver Control: variable (-6 to +6 dB)
Low Cut Filters Flat
80 Hz
100 Hz
Acoustics Flat
-2 dB
-4 dB
Protection RF interference 
Output-current limiting
Over-temperature
Turn on/off transient
Subsonic filter
External mains fuse
Power
Power Requirements Switchable, 100 to 120 VAC at 50/60 Hz or 220 to 240 VAC at 50/60 Hz
Physical
Cabinet Vinyl laminated MDF
Dimensions (W x H x D) 6.42 x 9.45 x 7.09" (163.0 x 241.0 x 180.0 mm)
Weight Per pair: 13.0 lb (5.9 kg)
Packaging Info
Package Weight 15.6 lb
Box Dimensions (LxWxH) 17.25 x 12.25 x 9.5"

PreSonus Eris E4.5 Hi-Definition 2-Way 4.5" Nearfield Monitors (Pair)